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To calculate the number of photons, you need the formula E=hf where h is Planck's constant with a value of 6.63*10^-34Js and f should be given.
If f isn't given, then use the formula C = f * wavelength. Rearrange this formula by using the wavelength given and the C, speed of light, which is 3*10^8.
You should get C/wavelength = f, which will then be placed into E=hf => answer.
What you also need is the Intensity. This way you obtain the photon flux as: I/E (i.e. the number of photons per unit area and unit time).
Wiki User
โ 11y ago
To calculate the energy content of photons in moles, you can first determine the energy of a single photon using the formula E = hc/ฮป, where E is energy, h is Planck's constant, c is the speed of light, and ฮป is the wavelength of the photon. Then, you can use Avogadro's number (6.022 x 10^23) to convert the energy of a single photon into moles by multiplying by Avogadro's number.
Wiki User
โ 13y agoEnergy content would be measured in Joule. Mole is a measure of "quantity of substance", basically, counting or calculating the number of photons. It is not related to energy content.
Wiki User
โ 14y agoMultiply the photon's frequency by Planck's constant.
Planck's constant is [ 6.626 x 10-34 Joule-second ] (rounded)
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How do you calculate how much energy in kJ do 3.0 moles of photons all with a wavelength of 655 nm contain?
The energy is 18,263.10e4 joules.
How do you calculate energy per mole of photons if you know joules per photon?
To calculate the energy per mole of photons from the energy per photon, you need to multiply the energy per photon by Avogadro's number (6.022 x 10^23) to account for the number of photons in a mole. The formula is: Energy per mole of photons = Energy per photon x Avogadro's number.
How much energy in kJ do 3.0 moles of photons all with a wavelength of 655 nm contain?
To calculate the energy of photons, you can use the equation E = hc/ฮป, where h is Planck's constant (6.626 x 10^-34 Jยทs), c is the speed of light (3.00 x 10^8 m/s), and ฮป is the wavelength. First, convert the wavelength to meters (655 nm = 655 x 10^-9 m). Plug the values into the equation to find the energy per photon, and then multiply by Avogadro's number to get the total energy for 3.0 moles of photons.
How many moles of photons with a wavelength of 660 nm are needed to provide 6 kJ of energy?
To calculate the number of moles of photons needed, first convert the energy to joules (1 kJ = 1000 J). Then use the energy of a single photon formula (E = hc/ฮป) to calculate the energy of one photon. Finally, divide the total energy needed by the energy of one photon to find the number of photons, and then convert it to moles.
How do you calculate the moles of water?
To calculate the moles of water, you can use the formula: moles = mass of water (in grams) / molar mass of water (about 18.015 g/mol). Simply divide the mass of water by its molar mass to find the number of moles.
How do you calculate how much energy in kJ do 3.0 moles of photons all with a wavelength of 655 nm contain?
The energy is 18,263.10e4 joules.
How do you calculate energy per mole of photons if you know joules per photon?
To calculate the energy per mole of photons from the energy per photon, you need to multiply the energy per photon by Avogadro's number (6.022 x 10^23) to account for the number of photons in a mole. The formula is: Energy per mole of photons = Energy per photon x Avogadro's number.
How much energy in kJ do 3.0 moles of photons all with a wavelength of 655 nm contain?
To calculate the energy of photons, you can use the equation E = hc/ฮป, where h is Planck's constant (6.626 x 10^-34 Jยทs), c is the speed of light (3.00 x 10^8 m/s), and ฮป is the wavelength. First, convert the wavelength to meters (655 nm = 655 x 10^-9 m). Plug the values into the equation to find the energy per photon, and then multiply by Avogadro's number to get the total energy for 3.0 moles of photons.
How is stoichiometry used to calculate energy released when I mass of liquid freezes?
Stoichiometry can be used to calculate the energy released during the freezing of a liquid by calculating the moles of the liquid that freeze and then using the enthalpy of fusion of the substance (given in kJ/mol) to determine the total energy released during the process. The energy released can be found by multiplying the moles of liquid that freeze by the enthalpy of fusion value.
How to calculate excess moles of acid in titration?
To calculate the excess moles of acid in a titration, subtract the moles of base used from the initial moles of acid. This will give you the amount of acid that was not neutralized by the base and therefore the excess moles of acid present in the solution.
How do you calculate moles from molarity?
To calculate moles from molarity, you use the formula: moles = molarity x volume (in liters). Simply multiply the molarity of the solution by the volume of the solution in liters to find the number of moles present in the solution.
How many moles of photons with a wavelength of 660 nm are needed to provide 6 kJ of energy?
To calculate the number of moles of photons needed, first convert the energy to joules (1 kJ = 1000 J). Then use the energy of a single photon formula (E = hc/ฮป) to calculate the energy of one photon. Finally, divide the total energy needed by the energy of one photon to find the number of photons, and then convert it to moles.
What would you need to do to calculate the molality of 0.2kg of nacl in 3kg of water?
To calculate the molality of a solution, you need to know the moles of solute and the mass of the solvent in kilograms. First, calculate the moles of NaCl in 0.2 kg: moles = mass (g) / molar mass. Then, calculate the molality by dividing the moles of solute by the mass of solvent in kg: molality = moles of solute / mass of solvent in kg.
calculate the number of moles in H2 molecules in 4g H2?
2 moles.
A solution contains 72.0 g of HCl and 468 g of (C6H6). What is the mole fraction of benzene?
First, calculate the moles of each component: moles of HCl = 72.0 g / molar mass of HCl and moles of C6H6 = 468 g / molar mass of C6H6. Then, calculate the total moles in the solution by adding the moles of each component. Finally, calculate the mole fraction of benzene by dividing the moles of C6H6 by the total moles in the solution.
How do you calculate moles of ions in 0.200 moles aluminum perchlorate.?
0,6 moles of (ClO4)3- and 0,2 mol Al
How can you use moles to solve problems?
moles can be used to calculate gmv(gram molecular weight)
